Powershell – changing the value of an environment variable

Question:

Is there a way to change the value of an environment variable (system) through powershell? I have only been able to change the value manually and see the change after restarting powershell. Context: We are trying to dynamically set the value of an indirect SSIS configuration and the configuration file is different per environment.

Answer:

To set an environment variable at the system level (and make them persistent), you need to use the .Net Framework method [Environment]::SetEnvironmentVariable()

In the current session, you can set them via $env:NAME = VALUE.

See http://technet.microsoft.com/en-us/library/ff730964.aspx

Source:

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